Cylinder for double-acting piston-engines.



G. GRUNWALD. CYLINDER FOR DOUBLE ACTING PISTON ENGINES.

APPLIGATION FILED JULY 23,1912.

Patented N0v.26, 1912.

eras earn r oration.

CARL GRUNWALD, OF BREDENEY, GERMANY.

CYLINDER FOR DOUBLE-ACTING PISTON-ENGINES.

memos.

To all whom it my concern: I

Be it known that I, CARL GRUNWALD, a

citizen of the German Empire, residing at Bredeney, Germany, have invented certainnew and useful Improvements in Working C ylinders for Double-Acting Piston-Englnes, of which the following is a specification.

This invention relates to double acting uni-directional flow piston engines, in which engines the driving means after each ex- .pansion, escapes through slits in the walls of the cylinder governed by the piston, and.

the object of the invention is to provide a novel arrangement'of the working cylinder.

In the drawing isillustrated one embodi inent of theinvention as applied to a vertical double acting uni-directional flow steam engine, shown in longitudinal section.

The working cylinder is divided at'its middle plane .at right angles to the axis of the cylinder, and the two halves of the cyl- C, and connected, by means of flanges a b v inder A abut against each other with flanges, and are held together by bolts. In the two halves of the cylinder A, which in the large. machines might be made of-cast steel .in order to lessen the weight, liners B of cast iron are inserted for the working piston and screws, with the halves of the cylinder A. The adjacent edges of the liners B have indentations and are so arranged that the teeth in one of the liners engage with gaps in the other one, leaving a space between I exhaust SlitD is provided. In order to them, so that between the two liners a wavy make theflange connection a 6 accessible,

the member E of the cylinder, forming the annular exhaust channel F, is likewise made as a casting and divided into two parts along the middle plane parallel to the axis of the cast cylinder. The two halves E of this casting are on the outside provided with fianges e which are clamped between the flanges a of the cylinderhalves A. .On the inner side, the castings E lie against-the liners B with flanges 6 In order toprevent water coming from the heating space H, to leak between the liner B and the flange 6 into the working cylinder, an annular groove G has been provided in the upper flange 6 which has a number of orifices g connecting it with the annular exhaust channel. 'I he lowerannu1ar surface of the flange e" is furthermore shaped as a drip lip g The water will con-seqnentlybe drawn off Specification of Letters Patent.

Application filed July 23, 1912.

Patented Nov. 26, 11.912. Serial in. 711,153.

into the exhaust channel F. Dormgs J are provided in the up er and lower part of the cyhnder for the in ct valves. The cylinder covers K are inserted in the'workingcylinder from the inside and rest against annular shoulders a in the working cylinder. A few 7 screws 74 keep the covers in position. The whole workmgcylmder stands in known manner on a pedestal L.

The working of the above described power engine is well known and needs here no further explanation.

The described arrangement of the cylinder is above all intended for large engines, and the following advantages will be gained thereby. As the whole .cylinder is divided in its middle, the whole upper part A E can beremoved sidewise without any considerable raising thereoffor the purpose of removing the piston, when the working piston G is in the position shown in the drawing. This is of considerable importance for ship propulsion engines of war ships, wherein :1

raising of the cylinder is impossible on account of the armor decksituateddirectly above the cylinder. Furthermore the division of the cylinder into several parts permits of very simple castings. By the use of the flange connections a 6 this cylinder construction gives. every advantage over the hitherto used cylinders with inserted liners,

namely that the liners. B do not need to be shrunk in place as has been the practice up v to now, and that they for thisreason will have no lnjurious deformation. B which have great facility for expansion between the flanges 6 may furthermore be The liners By the insertion of the cylinder covers from the inside the advantage lastly is at tained. that the forces acting on the'covers K, which in large engines are very great,

- is naturally also suitable for horizontal enwould be used as v water.

ginesand may particularly be.utilized in mternal combustion engines working in two stroke cycle, in thelatter case, the space ii.

I claim:

1. \Voiking uni-directional flow piston engines ha ing inserted cylinder liners, said cylinder be -ing divided into two halves on its mid-die plane across the cylinder axis, and liners having flanged connections with the cylinder halves. 1 I

2. Vlorking cylinder for double acting uni-directional flow piston engines having inserted cylinder liners, said cylinder be ing divided into two halves on its middle plane across the cylinder axis, and said liners having flanged connections with the cylinder halves, and a detachable annular member 'formlng the exhaust channel.

r 3.: Working cylinder for double acting uni-dlrect-lona-l flow piston engines having inserted cylinder liners, said cylinder being J across the cylinder axis, and

halves, a detachable annularimember term divided-int-o two halves pn its middle plane across thegcylinder axis, and said liners havflanged connections with the cylinder ing the exhaust channel; said annular member inclosing the adjacent "ends of said liners and permitting free expansion thereof within said channel.

4. Working cylinder for double acting uni-directional flow :piston engines having inserted cylinder liners, said cylinder being divided into two halves on its middle plane said liners having flanged connections with thefcylinder halves,- a detachable annular member forming the'exhaust channel; said member being cast in two annular halves inclosing the adjacent ends ot saidliners and permitting free expansion thereofwithin said chamber.

5. lVork-ing cylinder for double acting uni-directional flow piston engines having inserted cylinder liners, said'cylinder being divided intotwo halves on its middle plane across the cylinder axis, and said liners havin flanged connections ha ves, the adjacent ends of said liners having wavy edges forming a continuous wavy slit of uniform width around the periphery.

a chamber for. the cooling i I divided into two halves on its middle pl ne cylinder for double acting Ti Siiiti with the cylinder themes the periphery, a detachablememlmr fimi channel. r

T. Worinng cylinder tor double seeing u unidirectional {low piston en. ,mcs harm ng e ted cylinder liners, said cylinder across the cylinder axis, and said liners ha ing the exhaus channel; anmizlar fianges'on said member abut-t." 5 inst the outer cylindrical surface of. said liners. I

8. l vorking cylinder .i'or vertical double acting uni-directional flowpiston engines having inserted cylinder liners, said cylinder being divided into two halvesonjits middle plane across the cylinder axis, and said liners having flanged connections with the cylinder halves, a detachable annular men' ber forming the exhaust channel; annular flanges on said member abutting against the outer cylindrical surface of said l l l halves, a detachable annular member form.- l l nular flanges on said member abutting. against the outer cylindrical surface ofsaid liners; the upperone of said fl flanged connections with the cylinder halves, a detachable annular-member torming the inserted from the inside the cylinder and an abutment shoulder at each end of said cylinder retaining said covers in position.

' 11. V\ 'orking cylinder for double acting power engines, comprising an outer casing, apair of liners, a pair of cylinder covers and an exhaust channel casting; said outer leasing being divided in two halvesat a 1 plane across its axis and held together by l flanges and bolts; all oi said inner parts being assembled inside the'outer casing before said casing halves are bolted together.

12. XV'orking cylinder for'double acting member forn'iing the exhaust channel; an-

'ges beingprovided with an annular waterzcollectingfrom said groove into said channel the lower edge of i the cylinder axis, and said liners having within mid i-ng flanged connections with the cylinder its exhaust channel; covers for said cylinder.-

m: engines, comprising an Quite? casing lin rs farming a wavy circumferential 5: ayag a: mers, a pan m? cylinder COVQRS; sage frem the made of" the lmers in sand re:- and 2m axhaust channel sastm g; sald outer I haust channei.

easing being divided in twahalve f at @1 In testimuny whereof I have;- fix-es m file casing; heajacgnt edgas' of said piano across its axis ind hem, togei er by signature in *pfesenc-s 0% W10 Witness-e30 fian' es and bolts a heating chamber formed A A? W M between sald caslnfl-and sald 11118135); flanges v R GEL U M, on said. imrs for Yielding hem posfimm Lows V'ANDQRY, G. 'TKROMRERENR 

